import random
import string

choice = int(input("How many symbols?"))
res = []
if choice % 2 != 0:
    print ('Please type even number')
else:

    for i in range (int(choice/2)):

        a = random.choice(string.ascii_letters)
        b =  random.randint(0,9)


        passw = a + str(b)

        res += passw


pasword = ''.join(res)



print (pasword)